ARRANGEMENT OF A FUNCTIONAL COMPONENT FOR INFLUENCE TANK VENTILATION ON AN SUSPENSION LINE

Description

[0001] The invention relates to an arrangement of a functional component for influencing a tank ventilation on an intake line.

[0002] DE 10 2015 003 792 A1 discloses a coupling device for lines carrying hydrocarbon liquids or vapors, which lines may be tank vent lines. The coupling device is intended to establish a connection between a tubular plug-in part and a sleeve-like coupling body. In this respect, the coupling device is merely a connecting element that does not fulfill any further function, such as a venting function or a valve function. The coupling device comprises a coupling body with a nozzle receiving section and a locking element. The coupling device is thus designed in two parts and is intended to enable the simplest possible production from plastic using the injection molding process.The locking element has radially inwardly directed, elastically displaceable locking tabs that interact with a projection of a connecting piece to be inserted and prevent the connecting piece from detaching from the coupling device. This results in a three-part assembly consisting of the coupling body, locking element, and connecting piece when assembled.

[0003] DE 10 2016 005 468 A1 discloses an ejector for insertion into a receiving body. The ejector is designed as a functional component such that it can be inserted into a complementary receiving body in the correct position to fulfill its function as a jet pump in the assembly.

[0004] DE 44 41 879 A1 discloses a valve assembly for a line from a fuel evaporation control system to an intake manifold. The valve assembly comprises a housing provided on the intake manifold such that an outlet opening opens directly into the downstream line.

[0005] WO 99 / 14478 A1 discloses a vent valve that is inserted into a holder of an intake line. The connection is made by means of a detachable clip.

[0006] DE 10 2016 206 616 A1 discloses an ejector device with a suction chamber, a mixing channel, and a propellant nozzle device for generating a propellant jet directed along a jet direction out of the suction chamber and into the mixing channel. The device has a fastening device with a base body. In one disclosed variant, the fastening device comprises a translational locking device for preventing a translational movement of the base body relative to the suction channel in a direction parallel to the central axis of a connection piece of the suction channel. Projections and latching hooks on a mixing channel element of the base body are formed as locking elements of the locking device.

[0007] To influence the tank ventilation of a fuel tank functionally connected to an internal combustion engine, particularly in motor vehicles, valves and / or Venturi nozzles are used in practice. These valves can be used to adjust the amount of purge gas for tank ventilation or the amount of fuel vapors to be supplied to an intake line, and / or the duration of tank ventilation. It is known in practice to weld such functional components of the tank ventilation to an intake line.

[0008] The invention is based on the object of providing an arrangement of a functional component on an intake manifold of an internal combustion engine that enables particularly simple and cost-effective installation on the intake manifold. This should also allow for the creation of a clip connection that is protected against unintentional or unwanted loosening. In particular, the invention relates to arrangements with functional components in the form of tank vent valves and / or Venturi nozzles.

[0009] The object is achieved according to the invention with the features of claim 1. Further practical embodiments and advantages of the invention are described in connection with various functional components.

[0010] The invention relates to an arrangement of a functional component for influencing a tank ventilation of a fuel tank functionally connected to an internal combustion engine on an intake line of the internal combustion engine.

[0011] Corresponding means for establishing a clip connection are formed on the functional component and on the intake line of the internal combustion engine of an arrangement according to the invention, and the functional component is clipped directly to the intake line. The functional component is, in particular, a valve or a Venturi nozzle. Direct clipping means that no further connecting elements are arranged or interposed between the functional component and the intake line, for example, separately manufactured and separately assembled coupling elements. As already explained above, clipping the functional component to the intake line enables particularly simple assembly and cost-effective production of the intake line from a comparatively inexpensive plastic, whereas the functional component can be manufactured from any desired, higher-quality plastic.

[0012] According to the invention, the intake line has at least one clip receptacle, which, in addition to an insertion opening for a corresponding clip, has a demolding opening extending transversely to the insertion direction, in particular a demolding opening extending perpendicular to the insertion direction. If multiple clip receptacles are provided, the demolding openings preferably all extend in the same direction, for example, all perpendicular to the insertion direction. A demolding opening is particularly necessary if an undercut formed in the clip receptacle with the blocking surface is to be easily demolded by means of plastic injection molding.

[0013] To prevent the clip connection between the functional component and the intake line from becoming loose via the demolding openings, the demolding opening—particularly when the clip is inserted and in the locking position—is completely closed by a cover structure arranged on the functional component such that the clip, in the locking position, is no longer accessible via the demolding opening for release from the locking position. For this purpose, the cover structure preferably extends over the entire cross-sectional area of ​​the demolding opening. In this way, a clip connection can be created that is protected against unintentional or undesired release, in particular a clip connection that cannot be removed without causing damage, preferably not even with a standard or special tool.

[0014] Functional components provided for arrangements according to the invention for influencing tank ventilation of a fuel tank functionally connected to an internal combustion engine, in particular a fuel tank of a motor vehicle, comprise in particular a base body, wherein at least one flow channel for conducting fluid from an inlet side to an outlet side is formed in the base body. By means of the functional component, in particular the quantity of fuel vapors from the fuel tank that are supplied to the intake line, as well as the duration of tank ventilation phases, are controlled or regulated in terms of time and / or quantity. Furthermore, at least one means for establishing a clip connection of the functional component to an intake line is formed on the base body.At least one clip with at least one locking contour is also formed on the base body, wherein at least one cover structure is formed integrally with the base body of the clip and the cover structure is designed such that the cover structure protrudes transversely and longitudinally to the insertion direction relative to a clip head with the locking contour and a releasing actuation of the clip in an inserted locking position is prevented.

[0015] The connection between the functional component is made in particular such that the inlet side or the outlet side of the base body is connected to the intake line in such a way that fluid can be introduced into the intake line through the flow channel. To seal between the base body and the intake line, a sealing element, for example a sealing ring, is arranged in particular on the intake line and / or on the base body. Preferably, the functional component is directly connected to an intake scoop as part of the intake line by means of the clip connection. The intake scoop forms in particular a part of the intake line of the internal combustion engine, on which damping elements and / or resonators are arranged which serve to reduce flow and / or vibration noise in the intake line. The intake scoop is connected in particular upstream on an inflow side to a clean air pipe.Alternatively or in addition, the intake scoop is connected, in particular downstream on an outflow side, to a compressor of an exhaust gas turbocharger.

[0016] A clip connection enables time-efficient, simple, and, above all, tool-free installation of the functional component on the intake line. Another advantage is that no additional components are required to create the connection, such as screws, rivets, or other separate coupling elements. The clip connection also eliminates the comparatively expensive and time-consuming process of welding the functional component to the intake line. Welding has the further disadvantage that the components to be welded usually have to be made of the same materials or at least materials that are compatible with one another for welding purposes. Since functional components are often made of high-quality and therefore rather expensive plastic, such as polyacrylamide (PA), if welding is desired, the intake line must also be made of a rather expensive plastic.The realization of a suitable connection by means of a clip connection makes it possible to manufacture the intake line from any plastic and, in particular, from a cheaper plastic than, for example, polypropylene (PP).

[0017] In conjunction with one or more clips, it is particularly advantageous that at least one cover structure is formed on the base body of a functional component with a clip or on the base body of a functional component with a clip receptacle in such a way that a releasing actuation of the clip in an inserted locking position is made inaccessible by the cover structure and is thus prevented. Such a cover structure is formed in particular in one piece with the base body of the clip or with the base body of the clip receptacle. If formed on the base body of the clip, the cover structure extends in particular over at least part of the length of the clip extending in the insertion direction.

[0018] Particular advantages of the invention arise when the base body is designed at least as part of a Venturi nozzle or to accommodate a Venturi nozzle. Such a Venturi nozzle has, in particular, a first flow channel with a first inlet side and an outlet side, and a second flow channel with a second inlet side. The second flow channel usually opens into the first flow channel, or vice versa. In an arrangement according to the invention, the first inlet side of the first flow channel is connected, in particular, to an intake line downstream of a compressor of a turbocharger, in particular to the so-called pressure pipe, and the outlet side is connected to the intake line upstream of the compressor. In this case, the second inlet side is fluidly connected to the fuel tank via a tank ventilation line.By controlling and / or regulating the mass flow through the first flow channel, a negative pressure of varying magnitude is generated in the second flow channel - depending on the respective mass flow - which influences the ventilation of the fuel tank.

[0019] It is also advantageous if the base body is designed at least as part of a valve or to accommodate a valve. Such a valve can also be used to influence the tank ventilation of a fuel tank, in particular if the inlet side of the flow channel is fluidically connected to the fuel tank and the outlet side is fluidically connected to an intake line. The cross-section of the flow channel is narrowed or completely closed by the valve as required, so that the tank ventilation can be controlled and / or regulated as required. For this purpose, the valve is preferably provided with a pneumatic, hydraulic and / or electrical connection which serves to actuate the valve. Alternatively or additionally, an additional, externally driven pump can be provided to pump fluid through the flow channel.

[0020] In a practical embodiment of a functional component provided in an arrangement according to the invention, at least one clip with at least one locking contour is formed on the base body. Preferably, two, three, four, or more such clips are formed. In particular, one or more clips are designed to interact with a corresponding clip receptacle in the intake line.

[0021] The features of the at least one clip described below preferably, but not necessarily, apply to several clips, provided that two, three, four or more clips are provided.

[0022] The at least one clip is preferably spring-elastic and allows spring-elastic compression and rebound due to its flexurally elastic design, in particular in a direction transverse to a connection direction or insertion direction. The connection direction or insertion direction refers to the direction in which the clip must be moved in order to be inserted into a corresponding clip receptacle and thus brought into its locking position. The at least one clip preferably has a clip body and a clip head with the locking contour. The clip body preferably has a width extending transversely to the longitudinal extent of the clip of 0.5 mm to 2 mm and preferably of 1 mm to 1.5 mm in order to provide suitable spring elasticity.

[0023] In this case, a locking contour refers in particular to the formation of an abutment surface on a clip, which extends transversely to the connection direction or insertion direction, in particular perpendicular to the connection direction or insertion direction. Preferably, an undercut with a blocking surface extending transversely to the insertion direction is formed in the corresponding clip receptacle. This blocking surface corresponds to the abutment surface and interacts in such a way that the clip is locked and the clip connection is prevented from becoming loose. Such a clip with a locking contour represents a particularly simple and intuitive means for establishing the clip connection.

[0024] A covering structure can in particular be plate-shaped, ie have a thickness which is much smaller than the length and the width, in particular less than 20 percent, less than 10 percent or less than 5 percent of the respective smaller dimension of the length or width.

[0025] In particular, the cover structure is designed such that it protrudes transversely and longitudinally relative to a clip head with the locking contour in the insertion direction. If the base body itself has a cover structure, the clip connection is particularly secure, since the cover structure reliably prevents actuation of the clip in an inserted locking position, thus effectively preventing accidental and non-destructive release of the clip from the clip receptacle. The clip connection is preferably designed as a non-detachable connection, i.e., such that, once the clip connection has been established once, it can be released again, even with the aid of tools, at least in a non-destructive manner.This design has the advantage that factory assembly by a vehicle manufacturer or automotive supplier with functional testing of the leak function, particularly when mounted on a motor vehicle, can usually be designed for the service life of the vehicle, and deliberate or accidental loosening in a motor vehicle workshop can be reliably prevented. This prevents minor leaks from occurring due to complete or partial loosening of a connection and / or improper reassembly of a loosened connection, which cannot be reliably detected by the diagnostic devices available in motor vehicles, in particular so-called on-board diagnostics (OBD). In this case, the cover structure ensures that the connection is not accidentally loosened or tampered with, and partial or only minor loosening of the clip connection is reliably prevented.

[0026] As already indicated, alternatively or in addition to a clip, at least one clip receptacle for a corresponding clip arranged on the intake line can be formed on the base body. Such a clip receptacle is designed in particular in the form of a recess or opening in the base body, in particular such that a corresponding clip can be fully or partially inserted into the clip receptacle. The clip receptacle is designed in particular such that it has an undercut with a blocking surface, which interacts with a locking contour of the corresponding clip and thus prevents the clip from being pulled out of the clip receptacle.

[0027] In particular, a plurality of clips and / or clip receptacles are formed on the base body, preferably at least two, three, four, or more clips and / or clip receptacles. The clips or clip receptacles are preferably distributed over the circumference of the base body, particularly preferably approximately evenly distributed over the circumference. Preferably, two, three, four, or more clips and / or clip receptacles are provided on the functional component in order to fix the functional component in a predetermined position and secured against rotation relative to the intake line, and to distribute the connecting forces acting on the clips across a plurality of clips.

[0028] In a particularly secure embodiment, the clip receptacle on the base body is designed such that the clip connection between the functional component and the intake line is configured as a non-detachable connection, i.e. the connection in particular cannot be released non-destructively, preferably not even with the aid of standard tools and not even with the aid of special tools. This is preferably achieved in that the locking contour is completely covered by the clip receptacle in an inserted locking position and cannot be reached by tools in such a way that the clip connection can be released again. Since demolding openings are sometimes necessary for demolding the undercut in the clip receptacle, an additional cover component is optionally provided which closes the demolding openings and completely covers the clip with the locking contour in the clip receptacle.

[0029] In a further practical embodiment of a functional component provided in an arrangement according to the invention, the base body is formed in two parts. In particular, the base body has an upper part and a lower part, which are preferably connected to one another by welding, gluing, screwing and / or by means of a further clip connection. The parting plane between the upper part and the lower part of the base body is arranged in particular in the region of a clip receptacle formed on the base body. This makes it possible to avoid undercuts that are difficult to demold, particularly in the region of the clip receptacle, whereby the base body can be manufactured cost-effectively using the plastic injection molding process despite the undercuts that must be realized.

[0030] The tool parting plane for producing the upper part and / or lower part is preferably arranged in the region of the blocking surface of the clip holder, in particular such that the blocking surface runs in the direction of the tool parting plane and is itself part of the tool parting plane.

[0031] Further practical embodiments of the invention are described below in conjunction with the drawings. They show: Fig. 1 a schematic overview of an arrangement of a functional component on an intake line, Fig. 2 an arrangement with a functional component in the form of a valve in a first perspective view, Fig. 3 the arrangement of Fig. 2 without the valve in another perspective view, Fig. 4 the area marked IV Fig. 2 in an enlarged view in a schematic sectional view, Fig. 5 the area marked V from Fig. 4in an enlarged view, Fig. 6 another arrangement with a functional component in the form of a Venturi nozzle in a perspective view, Fig. 7 only the Venturi nozzle from Fig. 6 in a separate illustration in a side view, Fig. 8 an arrangement according to the invention with a functional component in the form of a Venturi nozzle in a perspective exploded view, Fig. 9 the arrangement of Fig. 8 in a perspective view, Fig. 10 the area marked with X Fig. 9 in a sectional view, Fig. 11 the area of ​​the Venturi nozzle marked XI Fig. 8 in an enlarged view in a view from below and Fig. 12 the area of ​​the intake line marked XII in Fig. 8 an enlarged view.

[0032] In Fig. 1is a schematic view of an arrangement of a functional component 10, shown only schematically, on an intake line 12. On the far left in Fig. 1 A fuel tank 14 is shown schematically as a block, which is functionally connected to the functional component 10 via a tank vent line 16. The functional component 10 can be either a valve or a Venturi nozzle, as explained in more detail below. The functional component 10 is fluidically and thus flow-conductingly connected to the intake line 12. The intake line 12 extends here between an air filter 22 and a compressor 24 of an exhaust gas turbocharger (not shown).

[0033] In connection with the following Fig. 2 to 10 Three different embodiments of arrangements and functional components 10 on an intake line 12 are explained below.

[0034] In the Fig. 2 to 4A first embodiment of an arrangement with a first embodiment of a functional component 10 is shown. This functional component 10 is a valve 18, which is directly connected to an intake scoop 26. The intake scoop 26 forms part of the intake line 12. During operation of an internal combustion engine (not shown), intake air flows through the intake line 12 in the direction of the arrows leading out of the intake line 12.

[0035] The intake hood 26 is connected upstream to a clean air pipe 28. Downstream of the intake hood 26 is a Fig. 2 to 4A compressor (not shown) of an exhaust gas turbocharger (also not shown) is connected to the intake scoop 26. In addition, several resonators (not shown) are provided on the intake scoop 26 under the cover 30. These resonators are optional elements that do not need to be present to implement the invention.

[0036] The functional component 10, here in the form of the valve 18, has a base body 32. In the base body 32, a flow channel (in the Fig. 2 and 3 not visible and in the schematic sectional view of Fig. 4not shown) which leads from an inlet side 34 to an outlet side 36. The inlet side 34 is in this case fluidically connected to the tank ventilation line 16 and a fuel tank 14 arranged upstream thereof. The outlet side 36 is directly connected to the intake scoop 26. A sealing ring 38 is arranged on the base body 32 of the functional component 10 in the region of the outlet side 36 such that the connection between the outlet side 36 and the intake scoop 26 is reliably and permanently sealed (cf. Fig. 4 ). Furthermore, an electrical connection 40 is provided on the base body 32, via which the valve 18 can be controlled, in particular switching between an open position and a closed position. Optionally, it is also possible to provide multiple open positions with different flow cross-sections.

[0037] The connection between the intake scoop 26 and the valve 18 is realized in this case by means of a clip connection. For this purpose, both the intake scoop 26 and the valve 18 have means 42 for establishing the clip connection. As shown in Fig. 3 As can be seen, the intake hood 26 has three clips 44 as such means 42. The intake hood 26 is cam-shaped in the area of ​​the three clips 44 and the clips 44 are arranged approximately evenly distributed over the circumference of this cam-shaped area. Fig. 4 and 5 It is clearly visible that the clips 44 comprise a clip body 46 and a clip head 48, wherein the clip head 48 has a locking contour 50 with an abutment surface 52. Clip receptacles 54 in the form of openings corresponding to the clips 44 are formed on the base body 32 of the valve 10 as means 42. The clip receptacles 54 each have an undercut 56 with a blocking surface 58.

[0038] To establish the clip connection, the clips 44 are inserted into the corresponding clip receptacles 54 in the insertion direction E through an insertion opening 60. The clips 44 are designed to be resilient and, in this case, spring transversely to the insertion direction E, initially radially inward with respect to the insertion axis and, after reaching the locking position in the area of ​​the undercuts 56, radially outward again. The locking position is in the Fig. 4 and 5 clearly visible. Loosening of the clip connection is prevented by the interaction of the abutment surface 52 and the blocking surface 58.

[0039] In the present case, the base body 32 of the valve 18 is designed in such a way that the clips 44 in the Fig. 4 and 5shown locking position cannot be pulled out of the respective clip receptacle 54 without causing damage. For this purpose, the clips 44 are surrounded in the locking position by the base body 32 of the functional component 10 in such a way that accessibility and thus actuation or release of the clips 44 is not possible either by hand or by means of a tool.

[0040] In order to be able to realize the undercuts 56 in a plastic injection-molded part in a manufacturing-technically advantageous manner, the base body 32 of the valve 18 is formed in two parts, wherein the base body 32 comprises an upper part 62 and a lower part 64. The parting plane between the upper part 62 and the lower part 64 is in Fig. 4 visualized by the line marked T. The demolding of the lower part 64 takes place along the mold parting plane marked W, which is located at the level of the blocking surface 58.

[0041] In connection with the Fig. 6 and 7A second embodiment of an arrangement with a second embodiment of a functional component 10 is shown. In the following, to explain this second embodiment and a third embodiment, the same reference numerals are used for identical or at least functionally equivalent components as for the description of the first embodiment.

[0042] In the Fig. 6 and 7 The functional component 10 shown is a Venturi nozzle 20. The Venturi nozzle 20 is clipped to an intake hood 26 by means of a clip connection. The intake hood 26 corresponds to the intake hood 26 of the Fig. 2 to 5 shown intake scoop 26. At the position (interface) where the Fig. 2 to 5 In the embodiment shown, the valve 18 is connected to the intake hood 26, in the embodiment shown in the Fig. 6 and 7 In the embodiment shown, the Venturi nozzle 20 is connected to the intake hood 26.

[0043] A first flow channel 66 with a first inlet side 68 and an outlet side 70 is provided in the base body 32 of the Venturi nozzle 20. The first inlet side 68 serves in this case for connection to a pressure pipe downstream of a compressor (not shown) of an exhaust gas turbocharger (also not shown). The outlet side 70 opens directly into the intake scoop 26. In addition, a second flow channel 72 is formed with a second inlet side 74, which can be connected to the tank ventilation line 16 leading to the fuel tank 14. The second flow channel 72 opens into the first flow channel 66. By changing the mass flow through the first flow channel 66, which is controllable and / or regulatable, the negative pressure in the second flow channel 72 can be changed, whereby the tank ventilation of the fuel tank 14 can be controlled and / or regulated.

[0044] At the positions where the valve 18 is made of the Fig. 2 to 5 Clips 44 are arranged, three clip receptacles 76 are formed on the base body 32 of the Venturi nozzle 20 (in Fig. 6 and 7 only two clip receptacles 76 are visible), which serve to hold the three clips 44 formed on the intake scoop 26. The clip receptacles 76 are functionally identical and have the same technical features as the clip receptacles 54 of the valve 18, which in Fig. 4 and 5 As can be seen from a summary of the Fig. 6 and 7As is clear, the clip receptacles 76 are designed such that a demolding opening 80 extending in the insertion direction E is formed opposite an insertion opening 78, whereby the clips 44 remain accessible even in their locking position. To counteract a release of the clip connection, a separate cover component (not shown) can be provided in addition to the base body 32, which conceals the demolding openings 80 in order to prevent the clips 44 from being made accessible and actuated, in particular for the purpose of releasing the clip connection.

[0045] In the Fig. 8 to 12 A third embodiment of an arrangement with a third embodiment of a functional component 10 is shown. The functional component 10 shown here is also a Venturi nozzle 20.

[0046] The Venturi nozzle 20 is essentially identical to the one shown in the Fig. 6 and 7shown Venturi nozzle 20 - particularly with respect to the first flow channel 66 and the second flow channel 72.The Venturi nozzles 20 from Fig. 6 and 7 as well as from the Fig. 8 to 12 therefore function the same. The following discusses the key differences in the third embodiment, which are primarily related to the clip connection.

[0047] In the present case, two clip receptacles 82 in the form of openings are formed as means 42 for establishing a clip connection on the intake hood 26. The clip receptacles 82 each have, as shown in Fig. 12 As can be clearly seen, it has an undercut 84 with a blocking surface 86. For demolding these undercuts 84 with the blocking surface 86, in addition to an insertion opening 88 for a clip, a demolding opening 90 extending transversely, here perpendicularly, to the insertion direction E is formed.

[0048] In Fig. 10 and11 The two clips 92 corresponding to the clip receptacles 82 are shown. The clip bodies 94 of the clips 92 each have a width B of 1.25 mm extending transversely to the insertion direction E and are designed to be spring-elastic transversely to the insertion direction E. The clips 92 have a clip head 96 with a locking contour 98 and with an abutment surface 100. A cover structure 102 is formed integrally with the respective clips 92. The cover structure 102 is in Fig. 8 in a top view and in Fig. 11 shown in a view from below. The cover structure 102 is arranged on the side of the clip head 96 which, in the locking position, faces the demolding opening 90. The cover structure 102 is plate-shaped and projects beyond the clip head 96 both in the insertion direction E and transversely thereto.

[0049] In a Fig. 9In the latching position shown, the demolding opening 90 is completely closed by means of the cover structure 102, so that the respective clip 92 in the latching position is no longer accessible via the demolding opening 90 and thus can no longer be actuated without causing damage. List of reference symbols

[0050] 10Functional component 12Intake line 14Fuel tank 16Tank vent line 18Valve 20Venturi nozzle 22Air filter 24Compressor 26Intake scoop 28Clean air pipe 30Cover 32Base body 34Inlet side 36Outlet side 38Sealing ring 40Electrical connection 42Means for creating a clip connection 44Clip 46Clip body 48Clip head 50Locking contour 52Abutment surface 54Clip receptacle 56Undercut 58Blocking surface 60Inlet opening 62Upper part 64Lower part 66First flow channel 68First inlet side 70Outlet side 72Second flow channel 74Second inlet side 76Clip receptacle 78Inlet opening 80Ejection opening 82Clip receptacle 84Undercut 86Blocking surface 88Insertion opening 90Ejection opening 92Clip 94Clip body 96Clip head 98Locking contour 100Abutment surface 102Cover structure

Claims

1. Arrangement of a functional component (10) for influencing tank ventilation of a fuel tank (14) which is functionally connected to an internal combustion engine on an intake line (12), corresponding means (42) for producing a clip connection being formed on the functional component (10) and on the intake line (12) of the internal combustion engine, and the functional component (10) being directly clipped to the intake line (12), characterized in that the intake line (12) has at least one clip receptacle (82) which, in addition to an insertion opening (88) for a corresponding clip (92), has a demolding opening (90) extending transversely to the insertion direction, and, when the clip (92) is inserted and in the locking position, the demolding opening (90) is completely closed by a cover structure (102) arranged on the functional component (10), such that the clip (92), in the locking position, is no longer accessible via the demolding opening (90).